Air cooling device.



No. 790.979. 'PATENTED MAY 80, 1905. H. H. PEIRGE & E. A. TAYLOR.

AIR COOLING DEVICE.

APPLIGAIION FILED MAE.17, 1904.

(95 83) we f; s

UNITED STATES Patented May 30, 1905.

P TENT OFFICE.

HIRAM H. PEIRGE AND EDWARD A. TAYLOR, OF RACINE, WISCONSIN.

AIR COOLING DEVICE.

SPECIFICATION forming part of Letters Patent No. 790,979, dated May 30,1905.

Application filed March 1'7, 1904. Serial No. 198,579.

To all whom, it may concern.-

Be it known that we, HIRAM H. PEIROE and EDWARD A. TAYLOR, citizens ofthe United States, and residents of Racine, in the county of Racine andState of Wisconsin, have invented certain new and useful Improvements inAir Cooling Devices; and we do hereby declare that the following is afull, clear, and exact description thereof.

Our invention has especial reference to devices for cooling thecylinders of gasolene-engines; and it consists in certain peculiaritiesof construction in said cylinders, as will be fully set forthhereinafter in connection with the accompanying drawings andsubsequently claimed.

In the said drawings, Figure 1 is a central vertical sectional view of agasolene-engine cylinder embodying our present invention. Fig. 2 is adetail view illustrating the manner in which the coils are embedded inthe cylinder, and Fig. 3 is another detail view showing how the severalseries of coils intermesh with each other.

In engines of the explosive type employing gas or gasolene one greatobjection lies in the rapid heating of the cylinders, and various meanshave been devised for effecting the necessary reduction of temperature.This we propose to accomplish in the following manner, referring bynumerals to the parts shown in the said drawings: 1designatesametalcylinder, and 2 2 2 indicate series of coils of wire,preferably continuous, and we prefer to use a compound wire composed ofseveral strands twisted together, as shown. The cylinders are usuallymade of cast-iron, and in carrying our invention into effect we take anumber of sections of the coiled wire and mesh these sections togetherlaterally, thus forming a hollow cylinder, as indicated in Figs. 2 and3, and place this wire cylinder in the sand, which is shaped to receivethe molten iron from which the metal cylinder is to be formed, so thatwhen this is done the inner circle of the wire cylinder is embedded inthe metal cylinder, as best indicated in Fig. 2. ner a radiating-surfaceof large area is provided close to the heated body without greatlyadding to the weight and insuring a free and ready circulation of airbetween and around the coils.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

The combination with a metal cylinder of sections of coiled wire, saidsections being laterally meshed together to form askeleton cyl inder,surrounding said metal cylinder, and partially embedded therein.

In testimonythat we claim the foregoing we have hereunto set our hands,at Racine, in the county of Racine and State of Wisconsin, in thepresence of two witnesses.

HIRAM H. PEIROE. EDWVARD A. TAYLOR.

Witnesses:

W. H. CARPENTER, MARY E. MORRISSEY.

In this man-

